Ultrasonic Study near the Ferroelectric Phase Transition of RbHSO_4
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概要
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The anomalous ultrasonic attenuation and velocity of the longitudinal wavepropagating along the Z>-axis perpendicular to the ferroelectric axis (c-axis) ofRbHS0. have been measured as functions of tentperature and frequency near thetransition temperature 7'C. By assuming the single relaxation process of thefluctuation induced by the ultrasonic wave at each temperature, the relaxationtime T has been analyzed. Above IC thus obtained relaxation time indicates across-over behavior in which the relaxation time has the exponent of ot0.3 forT -T.<0.2'C and the exponent of n:2 for T-T.>O.2'C. The former and thelatter relaxation processes seem to be related to the energy and the polarizationrelaxation processes, respectively. The similar cross-over behavior has been ob-tained below T..
- 社団法人日本物理学会の論文
- 1978-02-15
著者
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Tatsuzaki Itaru
Research Institute Of Applied Electricity Hokkaido University
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KAWASHIMA Riki
Research Institute of Applied Electricity,Hokkaido University
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Kawashima Riki
Research Institute Of Applied Electricity Hokkaido University
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